Adsorption Conditions Optimization Of The Attapulgite On Lactobacillus Cells,
2015
School of Life Science and Chemical Engineering, Huaiyin Institute of Technology, Huai’an, Jiangsu 223003, China
Adsorption Conditions Optimization Of The Attapulgite On Lactobacillus Cells, Zhao Yuping, Tang Zixin, Yang Li, Feng Yunqi
Food and Machinery
The best adsorption conditions of the attapulgite on Lactobacillus cells were optimized. Different kinds and concentrations of acids and alkalis were used to pretreat the attapulgite, the results showed that 1 mol/L H3PO4 was the best. In pH 6, 0.4 mol/L phosphate buffer system, adsorption of attapulgite on Lactobacillus cells basically completed in 60 min, and reached to the adsorption equilibrium. Adsorption of attapulgite on Lactobacillus cells could well fit the Langmuir adsorption isotherm equation. With the increase of temperature, the equilibrium adsorption of attapulgite on Lactobacillus cells increased higher, which was an endothermic process. When Lactobacillus …
Effect Of Decoloring Process On Quality Of Massage Base Oil Developed From Sesame Oil,
2015
School of Food Science and Technology, Henan University of technology, Zhengzhou, Henan 450001, China
Effect Of Decoloring Process On Quality Of Massage Base Oil Developed From Sesame Oil, Zhao Yanru, Wang Xuede, Zhao Dan
Food and Machinery
This research according to the quality requirements of massage base oil as evaluation indexes, combining with free radical clearance, oxidation resistance and other indicators, compared the decolorizing technology's influence on the quality of sesame oil. And compare oils which have done in-depth research in the field of cosmetic skin care, such as olive oil, grape seed oil, wheat germ oil. That results showed that the decoloring process of sesame oil improve the oxidation resistance and the ability of scavenging free radicals significantly. In general, sesame oil skin care is better than other several kinds of vegetable oil which used as …
Eric-Pcr And Sau-Pcr Analysis Of Food-Borne Listeria Monocytogenes,
2015
College of Light Industry and Food Sciences, South China University of Technology, Guangzhou, Guangdong 510640, China; Xiamen Yinxiang Group CO., Ltd, Xiamen, Fujiang 361100, China
Eric-Pcr And Sau-Pcr Analysis Of Food-Borne Listeria Monocytogenes, Zhao Yiming, Shi Lei, Meng Hecheng, Zhang Zhigang, Yan He
Food and Machinery
To investigate the distribution of serotypes, genetic relativity and epidemiological characteristic of Listeria monocytogenes (LM). 22 LM strains isolated from Guangzhou and Xiamen were investigated by ERIC-PCR and Sau-PCR. Results of ERIC-PCR showed that these strains were distributed in 8 patterns (a-h). The main pattern was pattern h, and the number of strains was 8. Genotyping using Sau-PCR showed that all tested strains were grouped into 7 clusters (A-G). These results indicated the genetic relativity and epidemiological characteristic of different LM food-borne isolates.
Evaluation Of Sanitary Quality Of Beef And Mutton In Xilingol District,
2015
XiLinGuoLe Vocational College, Xilinhaote, Inner Mongolia 026000, China
Evaluation Of Sanitary Quality Of Beef And Mutton In Xilingol District, Xiao Fang
Food and Machinery
Recently，the beef and mutton industrialization is developing rapidlyin Xilingol district of Inner Mongolia. To have a better understanding of sanitary quality of Xilingol beef and mutton, tests of bacterial colony, fecal coliform and pathogenic bacteria were conducted on 160 pieces of Xilingol beef and mutton samples. The results showed that the qualified rate of bacterial colony and fecal coliform were 76.25% and 77.18%, and the detection rate of pathogenic bacteria was 5.63%. The data provided theory evidence for improving Xilingol beef and mutton sanitary quality in the future.
Analysis On Feasibility Of Detection Of Melamine In Liquid Milk Based On Near-Infrared Spectroscopy,
2015
School of Medical Instruments and Food Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
Analysis On Feasibility Of Detection Of Melamine In Liquid Milk Based On Near-Infrared Spectroscopy, Cheng Wenyu, Guan Xiao, Liu Jing
Food and Machinery
The reasonability using near-infrared spectra (NIRS) for detection of melamine in liquid milk were studied. NIRS of samples were obtained by Fourier Transform Infrared Spectroscopy(FTIR) spectrometer, samples of liquid milk with adding melamine were analyzed while characteristic signals were extracted by wavelet transform and principal component analysis. Quantitative analysis was taken by General the Regression Neural Network(GRNN) for the diffuse reflectance spectroscopy of liquid milk adding melamine first. The result is not satisfactory enough that when concentration of melamine is lower than 0.05%, the R2 of predict model is only 0.567. Qualitative discrimination by support vector machine was carried …
Determination Of Twelve Elements In Jujube By Inductively Coupled Plasma Atomic Emission Spectrometry (Icp—Aes),
2015
College of Food Science and Pharmacy, Xinjiang Agricultural University, Urmuqi, Xinjiang 830052, China
Determination Of Twelve Elements In Jujube By Inductively Coupled Plasma Atomic Emission Spectrometry (Icp—Aes), Chen Kai, Li Jinyu, Li Qiong, Li Huanrong
Food and Machinery
A method was developed using ICP-AES for the simultaneous determination on the content of trace heavy metals including Na, Mg, Al, K, etc in 3 spieces of jujube of Xin Jiang district. The correlation index of method was greater than 0.998; Determination of elements in addition to the individual value, RSD is less than 5%. The results showed that: xinjiang jujube had rich mineral elements content, which especially in K (＞12 277 μg/g), Ca (＞785 μg/g), Mg (＞ 646 μg/g), Na (425 μg/g), Al (＞179 μg/g), Fe (＞22 μg/g) content is higher, the K and Fe content of Aksu jun …
Using Gc—Ms And Elisa Kits For Comparative Analysis Of Plasticizers In Red Wine,
2015
College of Life Sciences, South China Agricultural University, Guangzhou, Guangdong 510642, China
Using Gc—Ms And Elisa Kits For Comparative Analysis Of Plasticizers In Red Wine, Cao Bipu, Cao Yong, Miao Jianyin, Cao Sufang, Liu Guo, Tan Rongwei
Food and Machinery
There were two methods to detect the plasticizers of red wine. The first one was a traditional method(GC-MS) and another one was a new method-ELISA kit. An improved pre-processing of GC-MS and the comparative analysis of the two methods was used to find a novel detection method. The results: there was a little difference for the rate of plasticizer extraction with different pre-treatment. And DIBP, DBP, DEHP were detected. The GC-MS method demonstrated high precision and recovery. The GC-MS method was a excellent method to detect the plasticizers of red wine. The detection results of ELISA kit were 3.4 to …
Research On Toughness Of Cassava Stalk,
2015
School of Material and Mechanical Engineering, Beijing Technology and Business University, Beijing 100048, China
Research On Toughness Of Cassava Stalk, Li Menglin, Wang Tao, Huang Zhigang, Yan Mei
Food and Machinery
In order to study the factors that the influence of the cassava stalk toughness. Orthogonal experiments were used to test cassava stalk with MW-4 universal testing machine And the influencing factors were selected, for cassava stalk variety, placed time, and colliding parts. The results show that: effect of varieties on the impact energy is the largest, while, the impact energy was the smallest when the variety is SC6, placed for 12 days, and the the upper part collision site. Effect of varieties A on the impact toughness is the largest. The impact toughness is the smallest when the variety is …
Flow Field Characteristics Analysis Of Single Vortex Water Washer,
2015
Jiangsu Province Key Laboratory of Advanced Food Manufacturing Equipment and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
Flow Field Characteristics Analysis Of Single Vortex Water Washer, Wu Yan, Jin Guangyuan, Cui Zhengwei
Food and Machinery
The fluid dynamic characteristic of vortex flow washing in a fruits and vegetables washer unit with U-shaped structure was investigated by three-dimensional Computational Fluid Dynamic simulation (CFD). The single vortex flow formed by longitudinal and transverse water jet in washer unit was simulated at different flux rates of longitudinal and transverse water jet. The vortex flow dynamic characteristic in water unit and the effect of vortex flow on strengthening turbulent washing were discussed. The simulation results shows that flux rate has a dominant effect on vortex flow spacious distribution and intensity; the interaction between longitudinal and transverse water jet is …
Determination On Optimal Switching Point Of Two-Stage Feeding In Weighing Packaging Machine,
2015
College of Mechanical Engineering,Tianjin University of Science & Technology, Tianjin 300222, China
Determination On Optimal Switching Point Of Two-Stage Feeding In Weighing Packaging Machine, Su Junming, Li Zhenliang, Li Ya, Liu Baohua
Food and Machinery
Objective Researched the method to calculate the optimal two-stage feeding switch point of weighing packaging machines when it works. Methods Through analyzing the feeding and weighing process and the function of two-stage feeding, researched the effect of two-stage feeding switch point to the packaging speed and accuracy. Then found the range of values. Results The two-stage feeding switch point had an important impact on packaging speed and packaging accuracy, and a certain relationship. The packaging speed was maximized while ensuring the packaging accuracy through chosing the best switch point in the range of values. Conclusions Proposed a method to calculate …
Design Of Stacking Machine For Finished Food Boxes Based On Motion Controller,
2015
Inner Mongolia University for the Nationalities College of Mechanical Engineering College, Tongliao, Inner Mongolia 028000, China
Design Of Stacking Machine For Finished Food Boxes Based On Motion Controller, Wu Xiaoqiang, Huang Yunzhan, Zhao Yongjie
Food and Machinery
A kind of finished food boxes stacking machine was designed based on "PC + motion controller". Taking PC as the upper computer and multi axis motion controller as the lower computer, communication between the upper and lower machine used standard Ethernet, HMI and multi axis motion controller communicated via the RS232/485 standard interface, and completed the stacking work via the upper and lower computer. It can realize the function of stacking, reduce the amount of labor, and improve work efficiency. And it provides a new idea for the design of the stacking machine.
Effect On Preservation Of Fresh-Cut Lettuce By Ozonated Water Combined With Modified Atmosphere Packaging,
2015
College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306,China
Effect On Preservation Of Fresh-Cut Lettuce By Ozonated Water Combined With Modified Atmosphere Packaging, Yu Jiangtao, Xie Jing
Food and Machinery
Investigated, ozonated water combined with modified atmosphere packaging on preservation of fresh-cut lettuce stored at 4 ℃. Results indicated that ozonated water treatment combined with modified atmosphere packaging had prominent effect of controlling the reproduction of bacterial, the decline of water content , the degradation of chlorophyll and the activity of polyphenol oxidase (PPO), reducing its rotten, wilting, yellowing and browning rate. This method maintained high Vc content and sensory quality of fresh-cut lettuce at the same time. Also, it extended shelf-life of fresh-cut lettuce and kept its commodity value at 14th day.In addition, results also indicated that after …
Study On Effects Of Antioxidant Compounds On Stability Of Linseed Oil,
2015
Changzhou Technical Institute of Tourism & Commerce, Changzhou, Jiangsu 213032, China
Study On Effects Of Antioxidant Compounds On Stability Of Linseed Oil, Wang Jin
Food and Machinery
Using the accelerated oxidation test, this study was conducted to investigate the effects of different combinations of natural antioxidants with synthetic antioxidants on the stability the shelf-life of linseed oil by examining the changes in its acid value and peroxide value. The results showed that a combination of 0.04% oleaginous rosemary, 0.018% butyl hydroxy anisd and 0.018% propyl gallate was found to have the best antioxidant activity. Comparisons of the changes in acid value of linseed oil before and after alkali refining revealed that adding 0.6 or 0.7 g of sodium hydroxide to 4g of linseed oil and allowing them …
Research On Antibacterial Effect Of Eucalyptus Extracts Combined With Oxacillin Against Mrsa,
2015
School of Food & Biological Engineering of Jiangsu University, Zhenjiang, Jiangsu 212013, China
Research On Antibacterial Effect Of Eucalyptus Extracts Combined With Oxacillin Against Mrsa, Cui Haiying, Zhang Xuejing, Zhou Hui, Zhao Chengting, Li Wei, Lin Lin
Food and Machinery
Ethanol and water are used respectively to extract the active ingredients of eucalyptus leaves. Then it was researched on the inhibitory effect of the active ingredients on MRSA, and compared the inhibitory effect of the oxacillin with and without eucalyptus extracts addition. The results shows that, the ethanol extract of eucalyptus presents a minimum inhibitory concentration(MIC)from 1 g/L to 5 g/L for MRSA, and the water extract is from 2~10 g/L. With 0.2 g/L of ethanol extract of eucalyptus added, the oxacillin can reduce the MIC of the MRSA from 62.5～250 mg/L to 7.8～31.3 mg/L, and the MIC for all …
Study On Antibacterial Activity Of Phenol Hydroxyl From N-Aryl Schiff Cos Derivatives,
2015
Biochemical Engineering College of Beijing Union University, Beijing 100023, China
Study On Antibacterial Activity Of Phenol Hydroxyl From N-Aryl Schiff Cos Derivatives, Han Yongping, Gong Ping, Li Keyi
Food and Machinery
The N-aryl Chitooligosaccharides (COS) derivatives were firstly synthesized with Benzaldehyde, salicylal and 3,4-two hydroxy benzaldehyde, subsequently was quaternized to enhance its water solubility.The chemical structures of all COS derivatives were characterized by ATR-FTIR or 1H NMR. The antibacterial studies of these COS derivatives were carried out by the inhibition zone diameters methods against E.coli, S.aurueus and P.aeruginosa bacteria. The antibacterial activity results showed N-3,4-two hydroxy benzaldehyde Schiff’s base COS > N-salicylal Schiff’s base COS > N- Benzaldehyde Schiff’s base COS> COS. In comparison to the COS derivatives chemical structure, it was found that the phenol hydroxyl group from N-aryl Schiff COS …
Study On Isolation, Purification, Composition And Immulogical Characterics Of Ganoderma Lucidum Body Polysaccharides,
2015
State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
Study On Isolation, Purification, Composition And Immulogical Characterics Of Ganoderma Lucidum Body Polysaccharides, Yang Hui, Dai Jun, Chen Shangwei, Zhu Song
Food and Machinery
Two water-soluble polysaccharide fractions named as GLPD2 and GLPD2were isolated and purified from the same Ganoderma Lucidum body which was collected from Jiangxi province. The GPC and SEC-LLS results indicated that GLPD1 and GLPD2 were high purity, moreover, their molecule weights could both reach above 5×106. Their primary structural features and conformational properties were characterized by infrared spectrometry and SEC-LLS. The data obtained indicated that GLPD1 and GLPD2 may both be β-glucan configuration with pyran glucan groups. What's more, conformational analysis detected by SEC-LLS showed that GLPD1 and GLPD2 had rather tight structure with high degree of branch. However, PMP-HPLC …
Study On Preparation Of Body Wall Hydrolysate Of Starfish Asterina Pectinifera And Antioxidant Activity Detection,
2015
Dalian Polytechnic University, Dalian, Liaoning 116034, China; National Engineering Research Center of Seafood, Dalian, Liaoning 116034, China
Study On Preparation Of Body Wall Hydrolysate Of Starfish Asterina Pectinifera And Antioxidant Activity Detection, Li Yubo, Ji Xiaolin, Liu Shan, Zha Yue, Xin Qiuyan, Qi Hang
Food and Machinery
Hydrolysate was extracted from starfish Asterina pectinifera, the starfish Asterina pectiniferas were hydrolyzed with pepsin, neutrase and trypsin under their optimal conditions to obtain the hydrolysate, and the antioxidant activity of hydrolysate was detected by using electron spin resonance(ESR) spectroscopy The results indicated that the DPPH radical and hydroxyl radical scavenged ability increased with the increasing concentration of hydrolysate; at the concentration of 20 mg/mL, the clearance rate of pepsin group, neutrase group and trypsin group on DPPH radical were(5225±014)%, (6830±037)% and (4627±047)% respectively, and the rate of hydroxyl radical were(7261±017)%, (8182±079)% and (5677±028)% respectively.
Study On Antitumor Activities Of Five Kinds Of Wild Edible Mushrooms In Changbai Mountain,
2015
(School of Basic Medical Sciens, Yanbian University, Yanji, Jilin 133002, China
Study On Antitumor Activities Of Five Kinds Of Wild Edible Mushrooms In Changbai Mountain, Li Xue, Li Pengfei, Li Xiaodong, Yu Ting, Jin Qiankun, Cui Chengbi
Food and Machinery
To study the anti-tumor activities of wild edible mushrooms of the Changbai Mountain, the experiment selected Ganoderma Lucidum, Inonotus Obliquus, Phellinus, Hericium Erinaceus, Lentinula Edodes five kinds of Changbai Mountain wild edible mushrooms as materials, the experiment was divided into in vitro and in vivo study. The inhibition effect of tumor cells was tested by MTT method, and the inhibition ratio of mouse sarcoma S-180 was calculated in vivo study. The results showed that Ganoderma Lucidum has the highest inhibition ratio on the HeLa and HepG2 cell lines. Phellinus has the highest inhibition rate on MCF-7 cell line, Hericium Erinaceus …
Study On Subcritical Extraction Of Ginger Oil,
2015
College of Life Science & Engineering, Shaanxi University of Science & Technology, Xi′an, Shaanxi 710021,China
Study On Subcritical Extraction Of Ginger Oil, Chang Dawei, Sun Jiaojiao, Liu Shuxing
Food and Machinery
The gingers were selected as raw material and the optimum extract conditions of essential oil of ginger were studied by using subcritical extraction technology. The essential oil of ginger from the methods of subcritical extraction and hydro-distillation were compared. The 1, 1, 1, 2-tetrafluoroethane was used as the extraction agent. The optimum conditions of subcritical extraction were as follows: the materials granularity was 60 mesh；subcritical extraction time was 1.5 hours and extraction temperature was 30～40 ℃. Under the conditions, the extraction ratio of ginger essential oil was about 3.14%. The essential oil components were analyzed by GC—MS. α-curcumene and zingiberene …
Preparation Of Flavor Compounds From Volvariella Volvacea By Microwave-Composite Enzyme Synergistic Extraction,
2015
Guangdong Industry Technical College, Guangzhou, Guangdong 510300, China
Preparation Of Flavor Compounds From Volvariella Volvacea By Microwave-Composite Enzyme Synergistic Extraction, Jie Guangchuan, Chen Hongjie, Li Bijin
Food and Machinery
First, hydrolyzing the Volvariella volvacea by mlti-enzyme complex hydrolysis technology, and then using microwave technology to hydrolyze, using orthogonal design method to determine the optimum extraction process of the Volvariella volvacea with microwave-enzymatic hydrolysis technology and the extract amount of α-Amino nitrogen as observing indexes and the optimum extraction process were as followed: hydrolysis time 120 min, hydrolysis temperature 55 ℃, edible fungus hydrolase No.1 to No. 2 dosage 1∶2(m∶m), initial pH 5.5, microwave power 800 W, microwave temperature 70 ℃, microwave time 10 min. The content of α-amino nitrogen in the orthogonal experiments of microwave-assisted extraction under mlti-enzyme was …
